The contactless electroreflectance¡]CER¡^ spectra of ZnO bulk has been measured at 300K. It was observed the difference between the CER spectra by using the polarization E of probe light perpendicular ( E¡æc) and parallel ( E¡üc) to the c-axis of the m-plane ZnO. In addition, a mercury lamp was focused on the sample to reduce its strength of electric field. It was observed that the CER spectrum was blue-shifted with Hg lamp being on. Hence, the observed features were attributed to excitonic transitions. The experimental spectra were fitted by Lorentzian lineshapes. The energies of the A ( B¡^, B¡]A¡^, and C excitonic transitions were determined as 3.329eV, 3.343eV and 3.387eV, respectively.
| Identifer | oai:union.ndltd.org:NSYSU/oai:NSYSU:etd-0718111-163020 |
| Date | 18 July 2011 |
| Creators | Chiang, Yueh-hua |
| Contributors | Yung-Sung Chen, Dong-Po Wang, Yan-Ten Lu |
| Publisher | NSYSU |
| Source Sets | NSYSU Electronic Thesis and Dissertation Archive |
| Language | Cholon |
| Detected Language | English |
| Type | text |
| Format | application/pdf |
| Source | http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0718111-163020 |
| Rights | not_available, Copyright information available at source archive |
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